diff --git a/src/include/pg_config.h.win32 b/src/include/pg_config.h.win32
index d46f31351aa..508237cf226 100644
--- a/src/include/pg_config.h.win32
+++ b/src/include/pg_config.h.win32
@@ -3,8 +3,8 @@
 /*
  * Parts of pg_config.h that you get with autoconf on other systems
  */
-#define PG_VERSION "8.0.0"
-#define PG_VERSION_STR "8.0.0 (win32)"
+#define PG_VERSION "8.1.0"
+#define PG_VERSION_STR "8.1.0 (win32)"
 
 #define DEF_PGPORT 5432
 #define DEF_PGPORT_STR "5432"